Next prime | 89 |

Previous prime | 79 |

Octal | (123)_{8} |

Hexadecimal | (53)_{16} |

Prime gap | 6 |

15th Sexy prime (the small number) | The big number is 89 . |

13th Prime of the Form 4n+3 | |

7th Euler prime number | |

9th Sophie Germain prime | |

7th Safe prime | |

14th Left-truncatable prime |